Mixed operations

900 is equal to 3 times 100, which is 300.

$$10^3 = 1000$$ .

$$30^2 = 900$$ .

$$30^3 = 27000$$ .

$$\text{The square root of } 8100 \text{ is } 90$$ .

This is the Pythagorean theorem, which relates the lengths of the sides of a right triangle.

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). (PEMDAS)

According to the order of operations, $$5 + 3 \times 2 = 5 + 6 = 11$$ .

$$(8 - 3) \times 2 = 5 \times 2 = 10$$ .

$$12 \times 4 - 6 = 48 - 6 = 42$$ .